Question

Acetic acid on heating with p2o5 produces

Answer 1

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Answer 2

Answer:

On heating Acetic acid with $\mathrm{P}_{2} \mathrm{O}_{5}$, it will form ethanoic anhydride.

Acetic acid is the common name of ethanoic acid. The chemical formula of it is $\mathrm{CH}_{3}-\mathrm{COOH}$. It is a carboxylic acid with two C atoms. $\mathrm{P}_{2} \mathrm{O}_{5}$ is phosphorus pentaoxide that is a very good dehydrating agent and involves in dehydration reactions of carboxylic acids mainly.  

Here when acetic acid is heated with $\mathrm{P}_{2} \mathrm{O}_{5}$, it will form ethanoic anhydride.  

$\bold{2 \mathrm{CH} 3 \mathrm{COOH}+\mathrm{P}_{2} \mathrm{O}_{5} \rightarrow \mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{CO}-\mathrm{CH}_{3}+\mathrm{H}_{2} \mathrm{O}}$

One water molecule comes out during the reaction of combination of two molecules.